Display screen or portion thereof with icon



FIG. 1 is a view of a first embodiment of a display screen or portion thereof with icon in accordance with the new design; and,

FIG. 2 is a view of a second embodiment of a display screen or portion thereof with icon in accordance with the new design.

The outermost broken lines illustrate portions of a display screen while all other broken lines illustrate elements of a graphical user interface; all broken lines form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 